Power adapter



FIG. 1 is a perspective view of a power adapter showing our new design;

FIG. 2 is a top plan view thereof;

FIG. 3 is a bottom plan view thereof;

FIG. 4 is a right side plan view thereof;

FIG. 5 is a left side plan 1 view thereof;

FIG. 6 is a rear plan view thereof; and,

FIG. 7 is a front plan view thereof.

The broken lines shown represent unclaimed subject matter and form no part of the claimed design. 

The ornamental design for a power adapter, as shown and described. 